为什么不推荐使用 AngularJS $http success/error 方法？从 v1.6 中删除？

Question

AngularJS 文档有一个针对 $http success 和 error 方法的弃用通知。从库中删除此抽象是否有特定原因？

Answer 1

javascript 它使用的与 promises 相关的模式仅用于 .then(successCallback, errorCallback)，所以他们可能打算使用 js 模式。

Answer 2

问题是 .success 和 .error 方法 不可链接 因为它们 忽略 return 值。这给熟悉 chaining 的人带来了问题，并鼓励不熟悉 chaining 的人编写糟糕的代码。看看 Whosebug 上所有使用 .

的例子

引用 AngularJS 团队中的一位：

IMO .success and .error were a bad bit of API design in the first place. This issue highlights a number of situations where developers get confused because they either expect .success and .error to work the same way as .then or vice versa. In a perfect world I would rather just ditch these $http specific "promises". Instead we could encourage developers to use the standard $q promise API .then and .catch. There is very little benefit IMO in working with explicit parameters over working with the response object.

— AngularJS Issue #10508 $http .success/.error dissimilar from how .then works.

Deprecation Notice (v1.5)

The $http legacy promise methods success and error have been deprecated. Use the standard then method instead. If $httpProvider.useLegacyPromiseExtensions is set to false then these methods will throw $http/legacy error.

— AngularJS $http Service API Reference -- deprecation notice

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更新

已从 AngularJS 1.6 中删除已弃用的 .success 和 .error 方法。

Due to b54a39, $http's deprecated custom callback methods - .success() and .error() - have been removed. You can use the standard .then()/.catch() promise methods instead, but note that the method signatures and return values are different.

$http(...)
  .then(function onSuccess(response) {
    // Handle success
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  }).catch(function onError(response) {
    // Handle error
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  });

— AngularJS Developer Guide - Migrating to v1.6 - http